If the COM Registration Fixing tool doesn't work, then you've hit an issuetoggle quoted messageShow quoted text
that I reported a while ago but nobody fixed yet.
Anyone who wants to walk him through fixing it search for mathplayer in the issues and have at it.
I can't come up with a list of steps right now,
but I'm 99% sure that given the symptoms, that'll fix it.
The Python Console command in the issue description will work (as long as NVDA is elevated).
On Fri, Dec 27, 2019 at 04:19:35AM -0600, Gene wrote:
Run the COM Registration Fixing tool in the tools submenu of the NVDA menu. That may solve all your problems. It registers some dll files that may become unregistered for one reason or another and which must be registered for NVDA to perform properly.